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Albert einstein wrote a note to a bellman in 1922 on his theory of happiness when he didn't have a tip to pay. He stated basked on his notoriety and fame,' this note would be worth more than a tip." The note just sold last fall, OCT 2017,for $3200000. Given the napkin was worth 10 cents, what is the assumed rate of retuen for this investment?
Calculate the number of moles of carbon atoms
A gas occupying a volume of 1.50 L exerts a pressure of 700 mmHg at 200 degrees C. Which mathematical expression gives the correct pressure at 6.00 L and 400 degrees C?
a solution of ethanol c2h5oh in water is prepared by dissolving 65.7 ml of ethanol density 0.79 gcm3 in enough water
What is the maximum concentration of Cd2+ that can exist in a solution in which the S2- concentration is 2.5 x 10-6? Ksp(CdS) = 8.0 x 10-27
What is the atomic weight of an element if 4.00 grams of it contain 2.98 x 10^22 atoms. A) 2.02 u B) 80.8 u C) 8.08 u D) 20.2 u E) 19.7 u
a solution is prepared by dissolving 20.0 g ammonium sulfate in enough water to make 100.0 ml of stock solution. a
From a calibration curve I found a concentration of 11.84 micrograms/mL with a standard deviation of 1.79. I multiplied the concentration by 100 to find the micrograms in the 100mL solution.
Problem- draw all the molecular orbital diagrams for butadiene (c4h6) and order them from lowest energy to highest energy
A mixture of Na2CO3 and NaHCO3 has a mass of 81.1g. it is dissolved in 1.00L of water and the pH is found to be 9.92. what is the mass NaHCO3 in the mixture
what molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer with a ph of 5.20? kac6h5cooh
A solution of aqueous ammonia was titrated with HCL using phenolphthalein as the indicator a) is phenolphthalein an appropriate indicator for this titration? why or why not? b) choose another indicator for thetitration of nh3 by hcl
What mass of sucrose should be combined with 549 g of water to make a solution with an osmotic pressure of 9.00 atm at 280 K? (Assume the density of the solution to be equal to the density of the solvent.)
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